136568539193 has 2 divisors, whose sum is σ = 136568539194. Its totient is φ = 136568539192.

The previous prime is 136568539127. The next prime is 136568539201. The reversal of 136568539193 is 391935865631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135109910329 + 1458628864 = 367573^2 + 38192^2 .

It is a cyclic number.

It is not a de Polignac number, because 136568539193 - 2²⁴ = 136551761977 is a prime.

It is not a weakly prime, because it can be changed into another prime (136568530193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68284269596 + 68284269597.

It is an arithmetic number, because the mean of its divisors is an integer number (68284269597).

Almost surely, 2^136568539193 is an apocalyptic number.

It is an amenable number.

136568539193 is a deficient number, since it is larger than the sum of its proper divisors (1).

136568539193 is an equidigital number, since it uses as much as digits as its factorization.

136568539193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15746400, while the sum is 59.

The spelling of 136568539193 in words is "one hundred thirty-six billion, five hundred sixty-eight million, five hundred thirty-nine thousand, one hundred ninety-three".